HOME VULNERABILITIESCVE-2017-7909

CRITICAL

CVE-2017-7909

CWE-603Published: May 6, 2017· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A Use of Client-Side Authentication issue was discovered in Advantech B+B SmartWorx MESR901 firmware versions 1.5.2 and prior. The web interface uses JavaScript to check client authentication and redirect unauthorized users. Attackers may intercept requests and bypass authentication to access restricted web pages.

Technical Analysis

CVE-2017-7909 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

advantech_b\+b_smartworx2 product(s)

mesr901 firmwaremesr901

Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/98257

ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-122-03

ADVISORYhttp://www.securityfocus.com/bid/98257

ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-17-122-03

All References (4)

→

http://www.securityfocus.com/bid/98257Third Party Advisory · VDB Entry

→

https://ics-cert.us-cert.gov/advisories/ICSA-17-122-03Third Party Advisory · US Government Resource

→

http://www.securityfocus.com/bid/98257Third Party Advisory · VDB Entry

→

https://ics-cert.us-cert.gov/advisories/ICSA-17-122-03Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2017-7909

CVSS Score9.8 / 10

SeverityCRITICAL

WeaknessCWE-603

CISA KEVNo

Affected1 vendor(s)

PublishedMay 6, 2017

Related CVEs (CWE-603)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2017-7909 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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